If they found two cases of pipe bombs (not two pipe bombs but two cases) then the terrorists are bound to have many more.
Forensics can tell where they came from quickly. They should by now have located where the Molotov cocktails are being made, and soon the pipe bombs, This should be ongoing as we speak and raids commencing. (I say that in jest, but when I was in LE many years ago that would be true.)
I am afraid the peaceful riots are going to last until Nov. Their goal is to turn Blacks against President Trump.